Text and Data Mining valid from 2020-02-07
Received: 15 June 2018
Accepted: 6 January 2020
First Online: 7 February 2020
Ethics approval and consent to participate
: We agree with all journal ethics, and we declare that we are willing in participation with Financial Innovation.
: We would like to publish this article in Financial Innovation.
: The authors declare that they have no competing interests.